Our domain is proxied by Cloudflare. We recently started working with Zen Desk. They asked that we update our SPF record to include their mail server. We’ve done that and set TTL to 2 minutes. When they run SPF checking tools it shows no SPF record for our domain (most likely b/c we’re being proxied). How do we keep our domain protected and still allow the SPF record to be visible to Zen Desk?